Except it's not. Fury is one of the most intuitive and uncomplicated DPS specs in the game. You can literally follow Archimtiros' guide to a T and perform at an extremely competent and effective level. Stating that it is 'impossible to play without Simcraft and a calculator' is meaningless and unconstructive hyperbole.
As for the rest of your wall of text, much of it is misguided or flat out wrong. You will want to spend some time with the 7.1.5 Fury Guide & FAQ before diving into a deep conversation here.